Adjustable arm board

ABSTRACT

An arm board and arm member combination which can be supported on the arm rest of a dental chair and whereby the arm of a patient may be adjusted to incline up and down or laterally. This disclosure contains a description of the preferred form of an arm board which is suitable for use by anesthetists in connection with their practice in holding a patient&#39;&#39;s arm in the desired position for intravenous anesthesia at the chair. The board is supported for forward and rearward movement on a track member that is fixed to the side of the chair arm; a bracket is supported on the track and may be adjusted forward and rearwardly on the track. The bracket has a vertically extending bore which receives the vertically extending portion of a rod. The rod may be locked in selected vertical position in the bracket by a handle connected to a clamping screw. A second bracket is fixed to the bottom of the arm board and the second bracket has a laterally extending bore which receives the laterally extending part of the L-shaped rod. The arm board can rock forward and rearward and can be adjusted laterally on the lateral part of the rod. A clamp screw with suitable handle is provided to lock the arm board in the desired inclined lateral position to best suit the convenience of the anesthetist. The arm board likewise has utility when mounted on the side rail of a surgical table for anesthesia during operating procedure.

United States Patent [72] Inventor JohnB.Cunningham 425 West 10th St., Erie, Pa. 16502 [21] Appl.N0. 823,724 [22] Filed May 12,1969 [45] Patented Oct. 19,1971

[54] ADJUSTABLEARM BOARD 1 Claim, 4 Drawing Figs. [52] U.S.Cl 269/328, 269/323, 297/161 [51] Int.Cl ..A61g 13/00 [50] Field ofSearch 269/328, 323; 297/161, 162 [5 6] References Cited UNITED STATES PATENTS 2,067,891 l/1937 Comper 269/328 2,614,558 10/1952 Lovell.......... 269/328X 2,994,366 8/1961 Hoch 297/162X 3,046,072 7/1962 Douglass... 269/328 3,124,328 3/1964 Kortseh 269/323 FOREIGN PATENTS 503,763 1954 Canada 269/328 Primary ExaminerAndrew R. Juhasz Assistant ExaminerDonald D. Evenson Attorney-Charles L. Lovercheck ABSTRACT: An arm board and arm member combination which can be supported on the arm restof a dental chair and whereby the arm of a patient may be adjusted to incline up and down or laterally.

This disclosure contains a description of the preferred form of an arm board which is suitable for use by anesthetists in connection with their practice in holding a patient s arm in the desired position for intravenous anesthesia at the chair. The board is supported for forward and rearward movement on a track member that is fixed to the side of the chair arm; a bracket is supported on the track and may be adjusted forward and rearwardly on the track. The bracket has a vertically extending bore which receives the vertically extending portion of a rod. The rod may be locked in selected vertical position in the bracket by a handle connected to a clamping screw. A second bracket is fixed to the bottom of the arm board and the second bracket has a laterally extending bore which receives the laterally extending part of the L-shaped rod. The arm board can rock forward and rearward and can be adjusted laterally on the lateral part of the rod. A clamp screw with suitable'handle is provided to lock the arm board in the desired inclined lateral position to best suit the convenience of the anesthetist. The arm board likewise has utility when mounted on the side rail of a surgical table for anesthesia during operating procedure.

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ADJUSTABLE ARM BOARD STATEMENT OF INVENTION This invention relates to arm boards and, more particularly, to arm boards for use on dental chairs and hospital tables.

OBJECTS OF THE INVENTION It is an object of the invention to provide an improved adjustable arm board.

Another object is to provide an arm board in combination with a dental chair.

DESCRIPTION OF THE DRAWINGS FIG. 1 is a view of the arm board and chair;

FIG. 2 is an enlarged side view of the arm board;

FIG. 3 is a top view of the arm board;

FIG. 4 is a cross section view taken on line 4-4 of FIG. 2.

DETAILED DESCRIPTION OF THE DRAWINGS The device disclosed is provided with an arm board 10, which may be supported on the arm member 12 of body support which is the sample shown, which is a dental chair 11. The arm member will have a cavity 40 in its lower surface. The cavity receives the chair arm 12 shown in FIG. 4. A track 13 which is rectangular in cross section and is supported alongside the chair arm in spaced relation thereto by spacers 28 and positively attached to the chair 1 1 by screws 29. A bracket 25 has an upper part and a lower clamping jaw 27. The bracket is slidably received on the track 13 which is rectangular in cross section. The lower part 27 is held in alignment with the upper part 25 by the dowel 24 and the screw 23 may be tightened by the handle 30 to clamp the brackets in the desired forward or rearward position along the track 13. The screw 23 is threadably received in a threaded hole in the upper bracket part 25 and extends through hole 22 in the lower clamp jaw 27. Therefore, the bracket 25 may be clamped on the track 13 and thereby held against sliding by tightening the screw 23 by means of the handle 30.

The bracket 25 has a vertically extending hole 31 through which the vertical part of the L-shaped rod 26 extends. The rod may be slid up and down in the hole 23, and the screw l7 may be tightened by means of the handle 36 to clamp the rod 26 in the hole 31 in the desired vertical position. v

The rod 26 is L-shaped and has a laterally extending part 33 which is slidably received in the hole 19 in the bracket 16. The bracket 16 has a slot 20 and the screw 17 may be tightened by means of handle 18 to clamp the laterally extending part 33 of the rod in the hole 31. Thus, when handle 18 is loosened, the arm board may be rocked on the laterally extending part 33 of the rod and locked by means of the handle 18 in the desired inclined position. The arm board may also be slid laterally on the portion 33 of the rod to adjust the arm board laterally. Thus, it will be seen that the arm board may be adjusted forwardly and rearwardly along track 13, it may be adjusted up and down, and rotated on the rod 36 in hole 31 by loosening the handle 30, and it may be adjusted laterally and swung on rod 26 and rocked on rod 26 by loosening the handle 18. Thus, the anesthetist can adjust the arm board to bring the patients arm in nearly any desired inclined, vertical and lateral position and therefore, select the position that is most convenient for the operator to perform the operation.

I claim: 1. In combination, a chair having an arm, an ann board and an arm member,

said arm board having a first bracket with a laterally extending bore, an L-shaped rod having a laterally extending portion, said laterally extending portion of said rod being received in said bore, means to clamp said first bracket to said laterally extending portion whereby said arm may be locked against tilting, a track member fixed to said arm member, said arm member havin a cavity in its lower side, said cavity receiving saifi chair arm, a second bracket slidable from front toward the rear of said chair arm, means to lock said second bracket in selected position on said track, said second bracket having a vertically extending bore therein slidably receiving said rod, and means to lock said rod in said second bracket whereby said arm board may be locked in adjusted vertical positron. 

1. In combination, a chair having an arm, an arm board and an arm member, said arm board having a first bracket with a laterally extending bore, an L-shaped rod having a laterally extending portion, said laterally extending portion of said rod being received in said bore, means to clamp said first bracket to said laterally extending portion whereby said arm may be locked against tilting, a track member fixed to said arm member, said arm member having a cavity in its lower side, said cavity receiving said chair arm, a second bracket slidable from front toward the rear of said chair arm, means to lock said second bracket in selected position on said track, said second bracket having a vertically extending bore therein slidably receiving said rod, and means to lock said rod in said second bracket whereby said arm board may be locked in adjusted vertical position. 